Este trabalho compara pela primeira vez a composição química do óleo essencial das folhas de Licaria canella coletadas em duas estações climáticas. Os resultados foram comparados com os obtidos para o óleo essencial das folhas de outra espécie da família Lauraceae, Aniba canelilla, coletada no mesmo período. Ambos os óleos essenciais foram analisados por CG-DIC e CG-EM, e os resultados indicaram uma grande quantidade de benzenóides, sendo o principal constituinte em L. canella o benzoato de benzila e para A. canelilla, o 1-nitro-2-feniletano. A comparação das atividades biológicas mostrou que o óleo de L. canella (IC 50 19 µg mL-1) foi mais ativo contra as cepas de Leishmania amazonensis e menos citotóxico em cultura de macrófagos do que o de A. canelilla (IC 50 40 µg mL-1). Por outro lado, o óleo de L. canella exibiu uma maior citotoxicidade contra Artemia salina com uma concentração letal (CL 50) igual a 5,25 µg mL-1. This work compares the chemical composition of the essential oils from the leaves of Licaria canella collected in two different seasons. The results of this investigation were compared with the leaf essential oils of other species of the Lauraceae family, Aniba canelilla, collected at the same time. Both essential oils were analyzed by GC-FID and GC-MS. The results demonstrated a larger predominance of benzenoids, being the main constituent benzyl benzoate for L. canella and 1-nitro-2-phenylethane for A. canelilla. The comparison of the biological activities showed that L. canella (IC 50 19 µg mL-1) was more active against Leishmania amazonensis strains and less cytotoxic in macrophage cultures than A. canelilla (IC 50 40 µg mL-1). On the other hand, the L. canella oil displayed a higher cytotoxicity against Artemia salina with a lethal concentration (LC 50), equal to 5.25 µg mL-1 .
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